An item impregnated with a standardized quantity of a chemical agent(s) for the differentiation of certain groups of microorganisms (presumptive differentiation). For discs used for sensitivity testing, see sensitivity discs, diagnostic.
Classification: Diagnostic or lab reagents on a backing, prepared diag/lab reagents whether or not on a backing, not of heading 3002 or 3006; certified ref materials
NSN 5950-01-437-6045
NSN 6150-01-322-2049
NSN 6620-01-085-8688
NSN 5920-00-650-6562
NSN 6135-01-322-4655
NSN 6145-00-409-6844
NSN 5945-01-364-7904
NSN 5920-01-444-4082
NSN 5910-01-089-7080
NSN 5855-01-276-5447
NSN 5996-01-170-9659
NSN 5950-01-416-2209